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Old 05-04-2019, 09:09 PM   #22 (permalink)
Join Date: Mar 2014
Location: Central California
Posts: 59

Originally Posted by ak diesel drive View Post
AFAIK TDCO is never reset unless commanded. the resistor value on OBD1 is checked every 50 starts, on OBD2 not so

ok. So if this is true something is changing my timing.

1999 Suburban 6.5 150K
1983 Suburban 6.2 Sold
1999 Mercedes E300 RIP
1998 TDI Jetta-sold
1996 TDI Passat-sold

Last edited by dauber; 05-04-2019 at 09:11 PM.
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